161610447 has 8 divisors (see below), whose sum is σ = 226821760. Its totient is φ = 102069720.

The previous prime is 161610437. The next prime is 161610473. The reversal of 161610447 is 744016161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161610447 - 2¹¹ = 161608399 is a prime.

It is a super-2 number, since 2×161610447² = 52235873159079618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161610437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1417579 + ... + 1417692.

It is an arithmetic number, because the mean of its divisors is an integer number (28352720).

Almost surely, 2^161610447 is an apocalyptic number.

161610447 is a deficient number, since it is larger than the sum of its proper divisors (65211313).

161610447 is a wasteful number, since it uses less digits than its factorization.

161610447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2835293.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 161610447 is about 12712.6097635379. The cubic root of 161610447 is about 544.6988735743.

The spelling of 161610447 in words is "one hundred sixty-one million, six hundred ten thousand, four hundred forty-seven".